rails csv, array shows no data

Question

I am using csv to export data. I am dynamically populating the fields and in order to do so i have added loop in to csv:

csv_data = CSV.generate do |csv|
  csv << [
  @userHeaders.each do |user|
    "#{user.name}"
  end
  ]
end

but this returns some thing like this: [#<User >, #<User >, #<User >, #<User >]

but when i tried to inspect the value after assigning it to a variable, it displays all the names that have been passed.

name = "#{user.name}"
puts name.inspect  # (this diaplays all the names)

is there any format to display the data while looping inside csv?

please guide with answer thanks

Dylan Markow · Accepted Answer · 2011-06-06 05:53:43Z

1

Try just using the map (aka collect) method of your array:

csv_data = CSV.generate do |csv|
  csv << @userHeaders.map { |user| user.name }
end

answered Jun 6, 2011 at 5:53

Dylan Markow

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2 Comments

lamrin Over a year ago

Thanks it works great. i have one more case where data is not displaying properly, while displaying data in EXcel, it show like this ["jack","Tom","Kevin"] in a colunm. this is not returning as separate column. this is code i used just adding two more fields before loop csv << [ "Country","State", @userHeaders.map { |user| user.name }, ]

Dylan Markow Over a year ago

You probably want to use csv << ["Country", "State"] + @userHeaders.map { |user| user.name } instead.

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